package com.Stash.Filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter("/*")
public class filter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain Chain) throws IOException, ServletException {


        HttpServletResponse response = (HttpServletResponse) resp;
        response.setHeader("Access-Control-Allow-Origin", "*");//指定授权访问的域，*允许所有url访问
        response.setHeader("Access-Control-Allow-Methods", "*");//授权请求的方法
        response.setHeader("Access-Control-Max-Age", "3600");//60 min
        response.setHeader("Access-Control-Allow-Headers", "*");//响应头部
        response.setHeader("Access-Control-Allow-Credentials", "true");//允许客户端携带验证信息

        Chain.doFilter(req, resp);//通过过滤器后，继续执行原本请求
    }

    @Override
    public void destroy() {

    }
}
